US1537480A - Type-bar cushion for typewriters - Google Patents

Description

May 12, 1925. 1,537,480

L. M. LLORENS u TYPE BAR CUSHION FOR TYPEWRITERS Filed Dec. 22. 1922 Patented May 12, 1925.

UNITED STATES PATENT- OFFICE.

LOUIS M. LLORENS, OF LOS ANGELES, CALIFORNIA, ASSIGNOR OF ONE-HALF T0 WALTER D. JACKSON, OF LOS ANGELES, CALIFORNIA.

TYPE BAR CUSHION FOR TYPEWRITERS.

Application filed December 22, 1922. Serial No. 608,496.

To all whom it may concern:

Be it known that I, LOUIS M. LLORENS, a citizen of Cuba, residing at Los Angeles, in the county of. Los Angeles and State of' California, have invented new and useful Improvements in Type-Bar Cushions for Typewriters, of which the following is a specification. i

This invention relates to cushions for the type bars of typewriters.

It is an object of the invention to provide a cushion having especially the purpose of serving for a very considerable length of time before entire removal because of overwear and ineffectiveness. Another object of the invention is to provide a substantially reversible typewriter type bar cushion. Another object is to provide a type bar cushion of cylindrical form so that it may be rotated on its own axis to successively present new cushioning surface as the device is worn after considerable use. Another object is to providefmeans for fastening a reversible or rotary cushion in situ below the reclining retracted type bars.

Other objects and advantages will be made manifest in the following specification of an embodiment of theinvention illustrated in the accompanying drawings, wherein Figure 1 is a front elevation of a frag- .ment of a typewriter'frame, showing a portion in section and to which the improved cushion is attached:

Fig. 2 is a cross section of the cushion and its holder.

Fig. 3 is a perspective of the detached holder.

Fig. 4 is a side elevation and partial section of the attachment.

Fig. 5 is a plan of the inner face of the pad holder.

The invention, as shown, embodies a segment of an annulus preferably of thin metal of channel form, therefore, providing a segmental seat and holder for a substantially reversible cushion or pad element. The holder or cushion bed 2 is of arcuate form so that it may be fastened as by screws 3 or other suitable means in an inverted position on a contiguous inverted arch 4 which may form a portion of, or be applied to, the front frame F of a typewriter. The holder, as stated, is of channel shape in cross section and, therefore, presents side flanges 2 which are cutaway at the ends of the holder. At the ends of the holder are inturned lugs or tongues 5, and these are adapted to Serve as end retaining devices for the pad element.

The pad element is of a cushioning structure and is preferably circular in cross section-and is adapted to be bent to conform to the outline of the arcuate holding element 2; the length of the pad permitting it to be inserted in the holder and its ends engaged by the inturned tongues 5. The pad is here shown as consisting of a fabri-- cated or woven tube 7 having a stiff but elastic wall structure which acts as cushioning means when the type bars T of the typewriter swing down to a retracted position at rest.

It will be seen that after-an upper exposed zone of the cushion has been unduly worn and becomes ineffective, the cushion tudinal axis to present a new and fresh cushioning-surface; this rotation being readily permitted by the retaining tongues engaging the ends of the cushion member 7.

, From the above it will be seen that I have provided a type barcushion of a simple, inexpensive and durable construction, and which will have a greater length of life because of the possibility of its being reversed by gradual successive 'rotative movements in the holder.

Further embodiments, modifications and changes may be resorted to within the spirit of the invention as here claimed.

What is claimed is:

' 1. A typewriter type bar cushion consistmay be slightly rotated on its own longiing of a cushioning member of circular cross section and which is rotative on its longitudinal axis to present fresh unworn surfaces as themember becomes worn at the exposed contact zone engaged by the keys", said member consisting of a section of substantially cylindrical tubular woven elastic material.

2. A typewriter type bar cushion consisting of a cushioning member ofcireular cross section and which is rotative on its longitudinal axis to present freshunworn surfaces as the member becomes worn at the exposed contact zone engaged by the keys, and means comprising lugs or tongues at the ends thereof for holding the cushioningmember in a manner permitting its rotation Without being dismounted from the holder.

3. A typewriter type bar cushion consisting ofa cushioning member of circular cross section and which is rotative on its longitudinal axis to present fresh unworn surfaces as -the member becomes worn at the exposed contact zone engaged by the keys and means for holding the cushioning member and perinitting its rotation without being dismounted from the holder, said means including a bed member of segmental form having bendable retaining tongues at its ends to engage the ends of said cushioning member.

4. In a typewriting machine, an inverted arch element fixed to parts of the typewriter frame, a holder consisting of an arcuate bed member of channel shape, said bed member being arcuate in cross section from end to end and having retaining means at its ends, said holder being attached to the arch element', and a cushion of circular cross section and being transversely flexible so as to be deposited in the bed forming member retained therein by the end retaining means.

51 In. a typewriting machine, an inverted arch element fixed to parts of the typewriter frame, a holder consisting of an arcuate bed member of channel shape from end 'to end and having retaining lugs at its ends, said holder being attached to the arch element, and a cushion of circular cross section and being transversely flexible so as to-be deposited in the bed-forming member and retained therein by the end lugs.

6. In a front-strike typewriting machine, a rigid arcuate bed fixedly mounted upon the machine, and a cushion consisting of a body of elastic material and which body is of cylindrical cross section, said bed consisting of a strip having a continuous channel in which the cushion is supported from end to end and at its sides is engaged throughout its length by the flanges ofthe channel bed in a manner permitting free rotation thereon.

7. In a front-strike typewritingmachine,

a rigid, arcuate bed fixedly'mounted upon overlap the ends of the cushion and hold it against longitudinal movement.

8. A key cushion bed for a typewriter, consisting of an arcuate, channel strip, the flanges of which project inwardly as to the curve of the bed so as to support the sides of an applied cushion throughout its length,

- and cushion-retaining lugs at the ends of th bed.

9. A key cushion bed for a typewriterconsisting of an arcuate, channel strip, the flanges of which project inwardly as to the curve of the bed so as to support the sides of an applied cushion throughout its length,

and cushion-retaining lugs at the. ends of the bed; the bed being adapted to be readily attached to an inverted arch element of the machine frame. a V

10. In a typewriting machine, a cushion circular in cross section and acushion bed consisting of a channel strip provided with means for its attachment and with means for engaging the ends of said cushionin av manner permitting a free rotation of said cushion therein.

In testlmony' whereof I name to this specification.

Lou s M. LLO-REN'S.

have -signed my

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