US753397A - Type-bar segment for type-writers - Google Patents

Description

No. 753,397. ATBNTED MAR. 1, 1904. 0. W. HOWELL, JR. TYPE BAR SEGMENT FOR-TYPE WRITERS.

APPLIUATIOIT FILED OCT. 5, 1903.

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INVENTOR UNITED STATES Patented March 1, 1904 PATENT OEETcE. v

CHARLES WV. HOWELL, JR, OF NEWARK, NEW JERSEY, ASSIGNOR TO UNDERWOOD TYPEVVRITER COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEWV JERSEY.

TYPE-BAR SEGMENT FOR TYPE-WRITERS.

SPECIFICATION forming part of Letters Patent No. 753,397, dated March 1, 1904.

Application filed October 5, 1903. Serial No. 1'75 ,784. (No model.)

T0 60% whom, it may concern.-

Be it known that I, CHARLES W. HOWELL, Jr., a citizen of the United States, and a resident of Newark, Essex county, State of New Jersey, have invented certain new and useful Improvements in Type-Bar Segments for Type-Writers, of which the following is a specification.

My invention relates to that member of a type-writer or like machine on which the typebars are pivotally supported, and has for its object to efiiciently protect the pivot portions of the type-bars from dust or other foreign matter.

The invention will now be described in detail with reference to the accompanying drawings, and the novel features will then be pointed out in the appended claims.

Figure l is a sectional elevation of a portion of a type-writing machine sufficient to illustrate my invention. Fig. 1 is a bottom view of a portion of the segment with the type-bars removed. Fig. 1 is a rear elevation of a portion of the segment with the typebars removed, and Fig. 2 is a sectional detail of another form of my invention.

A designates that portion of the frame to which the levers B, carrying the keys B, are. pivoted, as at B A is the frame portion, on which are fulcrumed the elbow-levers O, arranged to transmit motion from the key-levers B to the corresponding type-bars D. Only one set of these parts is shown in Fig. 1, it being understood that a large number of such sets are located side by side. The elbow-lever O is fulcrumed at O, has a pin-and-slot connection O with the key-lever B, and another pin-and-slot connection O with the type-bar D.

E is the stationary cushion, on which the type-bars rest in their inactiveposition.

The type-bars are mounted on a pivot F, which is supported at the rear portion of the so-called segment G, which is secured to the frame of the machine. Each type-bar swings within a slot G of the segment, and I prefer to make the type-bar with a deep notch D and with a point D between said notch and the portion or hook D which engages the pivot F. The front side of the slots Gr is the one which is most exposed to the entrance of dust, particles of paper, and other foreign matter. To provide efficient protection against the entrance of dust, &c., from this side, I cause the slots G to terminate in the rear of the vertical plane (indicated by the line G at the forward face of the segment. The detail construction may vary. Thus in Fig. l the segment portion G which forms the top wall of the slot G, is inclined downwardly from the rear to the front and projects beyond the forward end of the slot, and thus forms a protecting-overhang H. In Fig. 2 the segment portion G forming the top wall of the slot G, is made horizontal, (although it might be inclined;) but the front surface G slopes downwardly from front to rear, so that here, too, the front end of the slot is in the rear of the vertical plane, (indicated by the line G leaving the extreme front portion of the wall Gr to form a protecting-overhang H.

I desire it to be clearly understood that my invention is not restricted to the two forms shown in the drawings; but various other constructions within the scope of my invention may be adopted to protect the front ends of the slots Gr. There is but little danger of dust, &c., entering from the top, for the reason that the slots G are coveredthat is, they terminate short of the upper surface G of the segment portion in which they are made. Even when this upper surface is horizontal, Fig. 2, the top wall of the slots Gr may be inclined in thesame manner as shown in Fig. l. The overhang H also extends over the entire path of the point D ,which forms the foremost point of the type-bars pivot portion. Thus the overhang H efliciently protects the entire portion I of each type-bar in front of the pivot F.,

I claim as my invention 1. In a type-writing machine, type-bars each having a pivot portion and a type-carrying shank connected therewith, in combination with a type-bar segment provided witha series of slots adapted to receive the type-bars, said slots extending from rear to front and terminatin'g short of the Vertical plane of the segments front surface, being covered from above by a top wall having an overhang extending forwardly from the front ends of the slots and over the path of the foremost point of the pivot portion of a type-bar.

2. A type-bar segment provided at its lower portion with a series of slots adapted to receive the type-bars, a portion of the segment forming an inclined top wall for saidslots, which terminate short of the forward end of said top wall, so that the lattenforms an overhang to protect the forward ends of the slots against the entrance of foreigngnatterr In a type-writing machine, type-bars each having a pivot portion and a type-carrying shank connected therewith, in combination with a type-bar segment provided with a series of slots adapted to receive the type-bars, a portion of the segment forminga top wall for the said slots to coverthem from above, said top wall being extended beyond the ends of the slots so as to form an overhang to protect the ends of the slots against the entrance of for-

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