US1177020A - Type-writing machine. - Google Patents

Description

Patented Mar. 28

ii w a A c. 3-. concomw. TYPE wmrme MACHINE. APPLICATION ElLED NOV. 21,1913.

M m L RAN, a citizen of the r Th1 OORNE LIU S- B. CORCORAN, OF NEW YORK, N. Y., ASSIGNOR TO UNDEItWOOD TYPE- WRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent.

Application filed November 21, 1913. Serial No. 802,206.

,To all whom it may concern:

Be it known that I, CORNELIUS B. Conco- United States, residing in the borough of Bronx, in the county of New York, city and State ofNeW York, have invented certain new and useful Im provements in Type-Writing Machines, of which the following is a specification.

This invention relates to typewriting machines, and more particularly to the stop which arrests the type-bars when near the platen, to cause them to spring against the plateii, as shown in the patent 'to Manning No. 612,858, dated October 25, 1898.

My object is to overcome certain difficulties experienced with the stop, which was heretofore formed integral with the type-bar segment, and necessitated adjustingthe type-bars in the individual machine for which they were to be used.

With my improved form of stop, which is separate from the type-bar segments, the typebars may be adjusted on a master machine, and then be placed in individual mastop baclnthe types are is a front plan'wiew chines, in each of whichthe stop may be adjusted to regulate the impression of the types upon the platen." The invention also has other advantages. For the adjustment of this stop, I have provided it with a series of cams which rest in seats or depressions in an adjusting bar, By shifting the latter, the cams may be forced gradually out of their seats, or bepermitted to move farther into the same, to bring the .typebar stop into a position where it will arrest the type-bar earlier or later. This adjustment of the stop may also be utilized to quickly regulate the type impressions, when a larged number of copies are to be made upon a machine which is normally used for art one or two copies. By setting the said harder against the platen. Other objects and advantages will hereinafter appear. 1

In the accompanying drawings, Figure 1 ot'my invention as applied to the segmen,t:of'- an Underw'ood type of machine, with against the platen. Fig. 2 is a side elevaution, partly sectional, to illustrate the manner in which the typdbaris arrested by the stop, and the type sprung a gainst the platen. an enlarged sec? al View of the l. of fastening the meat, showing a lilQtllOt' 'slots 15 in the slide bar,

permitted to strike a type-bar swung stop and slide bar in position. Fig. 4 shows the arrangement of the cams on the rear of the stop. Fig. 5 shows the cam seats in h slide bar. Fig. 6 is a detail view, shown the method of adjusting the stop by fore" the cams out of their seats.

In the usual form of an Underwood ma chine, to which my present invention is shown applied, key levers 1 rock bell cranks 2, which swing bars 3 on fulcrunis 4., to strike the types 5 on the outer end of said bars against a platen 6.

A device 7 is arranged to arrest the type bars 3 just before the type touches the platen. The type springs against the platen and makes its impression.

To regulate the impression of the types, I have provided an adjustment for the stop. The stop 7 is formed independently of the type-bar segment 8, and preferably com prises a stop portion 9, a body portion 10 and cams 11, which rest on seats 12 in an adjusting slide bar 13. This step is of a segmental form and is fastened. to the face of the type-bar segment 8 with screws passing through holes in the said stop and to permit the latter to be shifted in the direction of its length while the stop 7 is only movable toward and from the segment, being held against move ment in other directions by the screws 14-.

When the device is to be regulated to permit the types to make heavier impressions, the screws 14 are loosened, and the slide bar 13 is shifted from the Fig. 1 position to the left. This may be done by tapping on the projection 16. This causes the cam seats to be shifted beneath the cams 11, so that when the screws 14. are again tightened, the stop 7 will be drawn closer to the typebar seg ment 8, because the said cams settle lower in their seats, and permit the bars 3 to come closer to the platen before being arrested by the sto If the slide bar is-shifted in the opposite 'mined, the adjustment to determine the character of the impact must necessarily I always be true. in other words, the stop portion 9 will never wiggle or become askew.

Variations may be resorted to within the scope of the invention, and portions of the improvements may be used without others.-

Having thus described my invention l 'claim:

' 1. In combination with a typewriting machine segment, a plurality of type-bars pivoted in the segment, means for swinging any of said type-bars independently against a platen, a stop arranged on said segment to arrest said type-bars at a certain point of their movement, to cause the type carried thereon to s rin a -ainst the laten a'se riesof cams on said stop and means cooperating with said cams, by means of which the latter may be adjusted to arrest the typebars sooner or later in their movement against the platen.

2. In combination with a typewriting ma chine segment, a platen, a plurality of typebars pivoted in the segment, means for swinging any of said type-bars independently toward the platen, a stop arranged on said segment to arrest said type-bars at a certainpoint of their movement, to cause the type carried thereon to spring against the platen, a series of cams on said stop, a bar, and seats for said cams provided in said bar which may beshifted to gradually force said cams out of said seats or to allow them to sink deeper into the latter, thereby causing the stop to arrest the type bars sooner or later in their swinging movement toward the platen. I

3, In a typewriting machine, the combination of a platen, swinging type bars and a stop for said type-bars, and a bar for said stop the said bar and said stop provided I with cotiperating inclined surfaces to enable adjustment of said step with reference to the bar to be 'edected, and means for holding said parts adjusted.

4:. .ln combination with a typewriting machine segment, a platen, a plurality of typebars pivoted in the segment, means for swinging any of said type-bars independently' toward the platen, an adjusting bar, a stop provided with cams seated in; depressions in said bar, means for shifting said adjusting bar to adjust said stop and cause it to arrest the type-bars sooner or later in their swinging movement toward the platen,

to make a light'or heavy impression of the typecarried on said type-bars, and means for securing or looking said stop and bar in position on said segment when adjusted.

5. In a typewriting machine, the combination with a type-bar segment, of a set of type-bars pivotally mounted thereon with their pivots arranged in an arc, the type bars mounted to swing to a common printing center, a two part arc-shaped stop mountedonthe segment concentrically with said first-mentioned arc in position to inter-.

cept each of the typebars as it nears the printing point and permit the free end of the type-bars to spring to printing position, a sliding bar, and coijperating means on said bar and stop whereby when the bar is slid the stop is adjusted.

6. The combination with a support, of type-bars mounted to swing thereon to a common printing center, a stop mounted on the support and extending transversely of the type-bars in position to arrest the latter as they near the printing point, and an adjusting device interposed between the stop and its support and comprising cam means for adjusting the stop relatively to its support to thereby vary the point at which the type-bars are arrested.

The combination withtype-bars arranged to swing to a common printing center, of a support on which the type-bars are mounted, a stop extending transversely of the type-bars in position to arrest the typebars as they near the printing position, an adjusting slide interposed between the stop and said support-and provided with cams for moving the stop to vary the point at which the type-bars are arrested, and meansslide having cooperating cam surfaces, and' .screws extendlng through openings provided in the stop and threaded into the segment to permit adjustment of the stop toward and from the face of the segment, but

preventing lateral movement of the stop, said adjusting slide provided with elongated openings through which the screws extend to permit adjustment of the slide 'over the face of the segment to adjust the position of the stop, said screws serving to clamp the stop and slide in adjusted position;

10. The combination with a type-bar segment of a set of type-bars pivotally mounted thereon, the pivots of the type-bars arranged in an arc, the type-bars providediat their free ends with types arranged to swing to a printing center, an arc-shaped stop concentric with said first-named are and mounted on the segment between the type-loar pivots and the printing center, in position to arrest the movement of the type-bars about their pivots as the types approach the printing point and permit the types to spring to printing position, a slide interposed between the type-bar segment andsaid stop and arnanged to slide over the face ofthe typebar segment, said stop and slide formed with cooperating cam faces to move the stop toward and from the segment as the slide is member adjustable in planes parallel to itself to vary the stop in position for all of the type-bars, means for effecting such adjustment, a .tapping projection on said means, and means to lock the stop member in its adjustable position.

12. The combination with a support, of type-bars mounted to swing in said support to a common printing center, a stop mounted on said support, and extending transversely of the type-bars in striking position for the latter as they approach the printing point, an adjusting device interposed between the stop and its support, cam means on the stop, cam means on the adjusting support engaging the cam means on the stop, a tapping projection on said adjusting means whereby the support may be adjusted always in planes parallel to itself, and means for holding said support in adjusted position.

CORNELIUS B. CORCORAN.

W'itnesses:

F. E. ALEXANDER, TITUS H. Irons.

fiopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

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