US690772A - Type-writer pad. - Google Patents

Type-writer pad. Download PDF

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Publication number
US690772A
US690772A US1901077448A US690772A US 690772 A US690772 A US 690772A US 1901077448 A US1901077448 A US 1901077448A US 690772 A US690772 A US 690772A
Authority
US
United States
Prior art keywords
type
pad
writer
writer pad
writing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
Inventor
Richmond E Revalk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to US1901077448 priority Critical patent/US690772A/en
Application granted granted Critical
Publication of US690772A publication Critical patent/US690772A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/266—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by an apertured layer, the apertures going through the whole thickness of the layer, e.g. expanded metal, perforated layer, slit layer regular cells B32B3/12
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24273—Structurally defined web or sheet [e.g., overall dimension, etc.] including aperture
    • Y10T428/24322—Composite web or sheet
    • Y10T428/24331—Composite web or sheet including nonapertured component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/3167—Of cork
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31826—Of natural rubber

Definitions

  • My invention relates to improvements in devices for diminishing and muffling the noise created by the operation of a'type-writing, calculating, or similarly-operated machine;
  • A represents one ormore layers of thick felt or similar soft fibrous material. Alternating with these layers are one or more layers or sheets B of rubber, cork, heavy fabric, or like resilient dense material.' The intermediate rubber or cork sheets are perforated,
  • the felts and sheets are glued together or otherwise united to form the pad. It has been found advantageous to perforate the intermediate sheet of rubber, cork, or other interposed, denser material, as the noise is less with such perforated sheets than withsheets that are unperforated, while the difference between a pad composed of felt alone and one of equal thickness containing a rubber or cork sheet is even still more notable.
  • a means for diminishing and Inufliing the noise created by writing and other ma chines consisting of alternate layers of soft fibrous material and an interposed resilient dense material united thereto and having openings inclosed on both sides by the fibrous material.

Landscapes

  • Nonwoven Fabrics (AREA)

Description

No. 690,772. "Patented la n. 7,1902.
8:5.- REVA-L-K.
'F-YPE WRITER PAD.
(Application filed Opt. 3,1901.)
'ruz' nonms PETERS w momurnoq wnsnmmoul n4 4-.
UNITED STATES PATENT OFFICE.
RICHMOND E. REVALK, OF SAN FRANCISCO, CALIFORNIA.
TYPE-WRITER PAD.
SPECIFICATION forming part'of Letters Patent No. 690,772, dated January "2,- 1902.
Application filed October 3, 1901. Serial No. 77,448. (No model.) i
To all whom it may concern:
Be it known that I, RICHMOND-E. REVALK, a citizen of the United States, residing in the city and county of San Francisco,State of California, have invented an Improvement in Type-Writer Pads; andl hereby declare the following to be a full, clear, and exact description of the same.
My invention relates to improvements in devices for diminishing and muffling the noise created by the operation of a'type-writing, calculating, or similarly-operated machine;
It consists of the improved type-writer pad, which I will hereinafter describe and claim.
Every one who has operated or seen operated a type-writing or calculating machine Having reference to the accompanying drawing, the figure is a View of a pad.
A represents one ormore layers of thick felt or similar soft fibrous material. Alternating with these layers are one or more layers or sheets B of rubber, cork, heavy fabric, or like resilient dense material.' The intermediate rubber or cork sheets are perforated,
as shown at 2. The felts and sheets are glued together or otherwise united to form the pad. It has been found advantageous to perforate the intermediate sheet of rubber, cork, or other interposed, denser material, as the noise is less with such perforated sheets than withsheets that are unperforated, while the difference between a pad composed of felt alone and one of equal thickness containing a rubber or cork sheet is even still more notable.
Having thus described my invention, what I claim, and desire to secure by Letters Patent, is
1. A means for diminishing and Inufliing the noise created by writing and other ma chines consisting of alternate layers of soft fibrous material and an interposed resilient dense material united thereto and having openings inclosed on both sides by the fibrous material.
2. A means for diminishing and muffling the noise created by writing and manually= operated machines, consisting of a pad capable of being fitted under the machine and in cluding alternate layers of soft fibrous material and an interposed sheet of resilient dense material united thereto and having openings in it serving to further reduce the sound.
In witness whereof I have hereunto set my hand.
RICHMOND E. REVALK.
Witnesses:
S. H. NOURSE, JESSIE C. BRODIE.
US1901077448 1901-10-03 1901-10-03 Type-writer pad. Expired - Lifetime US690772A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US1901077448 US690772A (en) 1901-10-03 1901-10-03 Type-writer pad.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1901077448 US690772A (en) 1901-10-03 1901-10-03 Type-writer pad.

Publications (1)

Publication Number Publication Date
US690772A true US690772A (en) 1902-01-07

Family

ID=2759314

Family Applications (1)

Application Number Title Priority Date Filing Date
US1901077448 Expired - Lifetime US690772A (en) 1901-10-03 1901-10-03 Type-writer pad.

Country Status (1)

Country Link
US (1) US690772A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2694026A (en) * 1951-08-14 1954-11-09 Merle J Johnson Typewriter pad
US2779035A (en) * 1950-03-22 1957-01-29 Special Textiles Inc Drawsheet

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2779035A (en) * 1950-03-22 1957-01-29 Special Textiles Inc Drawsheet
US2694026A (en) * 1951-08-14 1954-11-09 Merle J Johnson Typewriter pad

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