US1489599A - Typewriting machine - Google Patents

Description

A rils, 1924.- 1,489,599

' J. B. HOLDEN TYPEWRITING MACHINE Filed Aug. 29. 1922 WITNESSES 9 INVENTIIIFQI /f T A 3 HE ATTURNEY Patented Apr. 8, 1924.

UNITED STATES I 1,489,599 PATENT OFFICE.

' JOSEPH B. HOLDEN, OF SYRACUSE, NEW YORK, ASSIGNOR TO REMINGTON TYPE- WRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK..

TYPEWRITINGI MACHINE.

Application filed August 29, 1922. Serial No. 585,014.

To all whom it may concern:

Be it known that I, JOSEPH B. HOLDEN, a citizen of the United States, and resident of Syracuse, in the county of Onondaga and State of New York, have invented certain new and useful Improvements in Typewriting Machines, of which the following is a specification.

My invention relates to typewriting machines and more particularly to means for preventing comparatively sharp types, such as those employed for punctuation and accent marks, from puncturing the paper and pitting the platen in printing such marks.

The main object of my invention, generally stated, is to provide extremely simple, inexpensive and yet highly eflicient means of the character set forth.

A further object of the invention is to provide means of the character stated that may be readily introduced into existing typewriting machines without modifying, or materially modifying, the structural features of such machines as they now exist.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims. T

- In the accompanying drawings, wherein like reference characters indicate corresponding parts in the different views,

Figure 1 is a detail fragmentary top plan view showing parts of 2. Remington ortable machine combined with devices 0 my invention.

Figure 2 is a detail vertical foreai d-aft sectional view of the same. i

l have shown my invention in the present instance embodied in a Remington portable machine although it should be understood that the invention is not restricted to its use in such a machine but may be employed in different styles of typewriting machines.

In the Remington portable machine a.

series of segmentally arranged type bars 1 are pivoted at 2 in a slotted segment 3 to strike rearwardly and downwardly against the top side of a platen 4.. Each type bar is in geared connection, as indicated at 5, with a sublever 6 pivoted at 7 to a segment 8 i-onnected'to the type bar segment, as at 9.

1 l-lach sublever 6 is pivoted to the upper end of a link 10 that has its lower end pivoted to a second sublever 11. This last mentioned sublever is fulcrumed at 12 in a guide slot of a comb plate 13, and is I ivoted to a depending link 14 pivoted at llZS'lOWBl end to a key lever 15. The sublevers 6 are segmentally arranged and pivoted in an arc,

each sublever moving in the plane of its companion type bar. Each sublever 6 is connected to one end of a contractile returning spring 16, the other end of the spring being connected or anchored at 17 to a segmental sheet metal plate 18, each spring being arranged in the plane of movement of its sublever. This plate 18 is situated above the pivot wire 7 of the sublevers 6 and is secured to the support or segment 8 for the sublevers by headed screws 19. From the forward edge of the plate 18 extend stop projections 20, five such stops being shown in the present instance. A greater or less number of said stops may be provided but I prefer to employ such stops only for the type actions having the type a of a pointed character that are liable to puncture the paper and pit the cylinder; such type for example as print the punctuation and accent marks. Each stop 20 extends upwardly and rearwardly from the plane of its supporting plate 18 into the path of the sublever 6 with which it is to coact, and in a position to arrest such sublever just before the ty e on the associated type bar reaches the p aten. The effect of this is to arrest the type bar in geared connection with-said arrested sublever and prevent the type from striking the platen with sufiicient force to puncture the paper thereon or pit the platen, but enabling nevertheless an imprint to be produced from the type on the paper by .a slight overthrow of the type bar.

Inasmuch as it is necessary to nicely time and arrest each sublever controlled by a stop 20 with reference to the impact of the associate type a on the platen, I prefer to make each sto 2O bendable with the aid of a suitable too This is in order that each stop 20 may be readily and individually adjusted to arrest its companion sublever at the proper point in its operating movement. Each stop20 is preferably inclined at an angle to the contacting portion of the associated sublever 6 when the latter is in the arresting position, so that each sublever contacts with its stop only at or near the end.

of the stop. This enables a ve slight bending of the stop to efiectively a just its point of arrest and yet the stop is effective as such to arrest the parts.

In the Remington portable machine the parts are necessarily compactly arranged and there is little room available for the provision of additional parts. By my present invention I utilize the segmental plate ordinarily employed for anchoring the returning s rings 16 asa support for the stops 20 by which the sublevers are arrested, and therefore add at small cost but few parts to the existing Remington portable machine, and these occupy but a small amount of space and are readily accessible for the purpose of adjustment.

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

1. In a typewriting machine, the combination of a type action including a type bar and a sublever; a' fixed support, a fixed fulcrum carried by said support and on which said sublever turns; and a stop carried by said support and coacting with the sublever to arrest its turning movement before the type bar strikes the platen and thereby limit the motion of the type bar and prevent a relatively sharp type thereon from puncturing the paper.

2. In a typewriting machine, the combination of a series of type bars, a series of segmentally arranged key actuated sublevers therefor which turn on a fixed support, and segmentally disposed stops arranged in the paths of certain only of said sublevers, each stop arresting the turning movement of its sublever before the type on the associated type bar strikes the platen, thereby preventing such type from puncturing the paper.

3. In a typewriting machine, the combination of a series of type bars, a series of segmentally arranged key actuated sublevers therefor which turn on a fixed support, and

-- a fixedly mounted sheet metal segmental plate provided with integral projecting portions lying in paths of certain only of said sublevers to arrest the same before the type on the associated type bars strike the platen, thereby preventing such types from puncturing the paper.

4. In a typewriting machine, the combination of a series of type bars, a series of segmentally arranged sublevers therefor, a seg ment for said sublevers, a segmental plate secured to said segment and provided with projecting portions lying in the paths of certain only of said sublevers and coacting therewith to arrest the same before the type on the associated type bar strikes the platen, thereby arresting such'type bars and preventing the types thereon from puncturing the paper, said projections being bendable for the purpose of adjustment.

5.- In a typewriting machine, the combination of a type action including a type bar and sublever; and a sheet metal plate with an integral projection thereon that constitutes a stop coacting with the sublever to arrest it before the type strikes the platen and thus prevent the type from puncturing the paper, said projection being arranged at an inclination to the plate and to the sublever when the latter is in the arrested position. 1

6. In a typewriting machine, the combination of a type action including a type bar and a sublever; a spring connected at one end to said sublever; a plate to which the other end of said spring is anchored, and a projection on said plate which constitutes a stop coacting with the sublever to arrest it before the type strikes the platen, thereby limiting the printing movement of the type bar and preventing the type thereon from puncturing the paper.

7. In a typ'ewritingmachine, the combination of a type action including a type bar and sublever geared together; and a fixed sheet metal plate having a projection extending into the path of the sublever and acting as a stop to arrest the latter before the type strikes the platen, thereby arresting the type bar and preventing the type from puncturing the paper, said projection being bendable for the purpose of adjustment.

8. In a typewriting machine, the combination of a series of type bars, a series of seg mentally arranged key actuated sublevers geared thereto, a sheet metal segmental plate, a series of springs each connected at one end to a sublever and anchored at its other end to said plate, and a plurality of integral stop projections on said plate extending into the paths of certain only of said subleveis, each projection coacting with its sublever to arrest it before the associated type bar strikes the platen, thus preventing the type on the companion bar from puncturing the paper, each of said stop projections being bendable for the purpose of adjustment.

Signed at Syracuse, in the county of Onondaga, and State of New York, this 25 day of August, A. D. 1922.

. JOSEPH B. HOLDEN.

lrVitnesses:

I-IAnoLn IRVING KIMMEY, FRANK STEPHEN Lewis.

Images