US2520752A - Cap holding means for fountain pens - Google Patents

Cap holding means for fountain pens Download PDF

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Publication number
US2520752A
US2520752A US762666A US76266647A US2520752A US 2520752 A US2520752 A US 2520752A US 762666 A US762666 A US 762666A US 76266647 A US76266647 A US 76266647A US 2520752 A US2520752 A US 2520752A
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US
United States
Prior art keywords
cap
spring
pen
shell
arms
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
US762666A
Inventor
Alfred M Andauer
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.)
Universal Fountain Pen & Penci
Universal Fountain Pen & Pencil Co Inc
Original Assignee
Universal Fountain Pen & Penci
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.)
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Publication date
Application filed by Universal Fountain Pen & Penci filed Critical Universal Fountain Pen & Penci
Priority to US762666A priority Critical patent/US2520752A/en
Application granted granted Critical
Publication of US2520752A publication Critical patent/US2520752A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B43WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43KIMPLEMENTS FOR WRITING OR DRAWING
    • B43K23/00Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/08Protecting means, e.g. caps
    • B43K23/12Protecting means, e.g. caps for pens
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49908Joining by deforming
    • Y10T29/49915Overedge assembling of seated part
    • YGENERAL 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
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00Metal working
    • Y10T29/49Method of mechanical manufacture
    • Y10T29/49826Assembling or joining
    • Y10T29/49908Joining by deforming
    • Y10T29/49938Radially expanding part in cavity, aperture, or hollow body

Description

Aug. 29, 1950 A. M. ANDAUER CAP HOLDING MEANS FOR FOUNTAIN PENS Filed July 22, 1947 FIG.5
INVENTOR ALFRED M. ANDAUER ATTORNEYS FIG.3
Patented Aug. 29, 1950 UNITED STATES serum OFFICE Alfred M. Andauer, Baldwin, N.Y., assignor to Universal Fountain Pen & Pencil (30., 1 110., New York, N. Y., a corporation of New York Application July 22, 194.7,Se1ial No. 762,666
3 Claims. 1
This invention relates to means for holding the cap of a fountain pen in place on the pen. Not only should the cap be held firmly on the upper end of the pen during writing, but what is more important, it must be securely held over the nib, stylus, or ball when the pen is not in use, and, in the latter position, should serve to prevent evaporation of the ink so that the pen will be in condition for instant writing when the cap is removed.
Various means have hitherto been employed for holding fountain pen caps in position: screw threads, friction, snap springs on the cap engaging an annular groove in the pen barrel. These are either expensive or ineflicient. According to the present invention I employ a leaf spring riveted to the top of the cylindrical cap shell and extending down along its inner wall. When the pen is inserted the Spring is pressed against the wall of the cap and assumes its curvature, meanwhile exerting a gripping spring pressure against the pen and holding the cap snugly in place. I preferably employ a U-shaped spring with its two arms engaging the pen on opposite sides. The spring is also preferably arcuate in cross-section, of a curvature slightly less than that of the shell and with the concave faces opposing when the spring is mounted within the cap. As the spring is very thin.010 inch and covers about half the circumference of the cap when the pen is inserted, the fit is substantially air-tight. In any event, experience has shown that the writing end of a fountain pen closed with my cap remains capable of instant writing after long periods of disuse.
Not only is the spring of my invention efiicient for its purpose, it is inexpensive. It can be made in strips, cut to the proper unit length, a hole punched in the middle of the unit for a rivet, the spring bent to U-shape, inserted into the shell and riveted in place.
In the accompanying drawing I have illustrated a preferred embodiment of my invention. In this drawing Figure 1 is a longitudinal section through the empty cap of a fountain pen equipped with one of my springs,
Figure 2 is a transverse section taken along line 2-2 of Figure 1,
Figure 3 is a transverse section similar to 2 Figure 2, but showing a, pen barrel inserted in the cap and the holding spring flexed into gripping position,
Figure 4 is a plan view of an unbent spring unit, and
Figure 5 is a perspective view of the spring of Figure 4 bent into U-shape and ready for mounting within the cap.
The cap shown in these drawings comprises a cylindrical shell I, having a slightly tapered or conical upper end, withinwhich is mounted the spring of my invention. This spring is cut from a strip of phosphor bronze, or other suitable material, slightly dished, and a rivet hole 2 is punched through its middle to form the unit strip 3 shown in Figure 4. Ihis unit strip is then bent into the U-shape shown in Figure 5 with the concave surfaces of the depending arms 4 opposing each other. The spring is then inserted into the shell and riveted in position by means of a rivet 5, which also serves to rivet a clip 6 to the shell.
When the parts are assembled, as just described, the arms of the spring lie against the inner Wall of the shell, as shown best in Figure 2. The radius of curvature of the spring is greater than that of the shell so that the edges of the spring arms engage the inner wall of the shell, but a space 6 is left between the outer face of each spring arm and the adjacent inner wall of the shell. This is the position of the parts when the cap is empty.
When the barrel i of a pen is inserted into the cap it engages the spring arms 4 and bends them back against the inner wall of the shell until the parts take the position shown in Figure 3. Thus the flexed springs exert a pressure upon the pen and hold the cap firmly in place, although not so firmly that it cannot be readily removed.
As shown in Figure 3, the pen closes the cap except for two arcuate slots 8, as wide as the spring metal is thick and in sum about 186 in length. Thus the cap effectually seals the Writing end of the pen and prevents rapid drying of the ink so that the pen will write freely even after substantial periods of disuse.
I claim:
1. A fountain pen cap comprising a cylindrical shell and a leaf spring mounted witlun the shell and lying along its inner wall, the spring having 3 a transverse curvature less than that Of the shell with its concave surface facing inward.
2. A fountain pen cap comprising a cylindrical shell and a U-shaped leaf spring mounted within the shell with its arms lying along the inner wall of the shell, the arms being arcuate in crosssection with their concave surfaces opposing each other and of a transverse curvature less than that of the shell.
3. A fountain pen cap comprising a cylindrical shell, a U-shaped leaf spring mounted within the shell with its arms lying along the inner wall of V the shell, the arms being arcuate in cross-section REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PA'I'ENTS Number Number 15 158,560
Name Date Smith Aug. 9, 1892 Tredwell Sept. 19, 1905 Blackman May 8, 1928 Johnson Oct. 23, 1928 Blackman Mar. 19, 1929 Kirsch Oct. 27, 1931 Cuthbert Aug. 16, 1932 Baker Apr. '7, 1942 Lytton Mar. 19, 1946 FOREIGN PATENTS Country Date Switzerland Feb. 1, 1933
US762666A 1947-07-22 1947-07-22 Cap holding means for fountain pens Expired - Lifetime US2520752A (en)

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Application Number Priority Date Filing Date Title
US762666A US2520752A (en) 1947-07-22 1947-07-22 Cap holding means for fountain pens

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US762666A US2520752A (en) 1947-07-22 1947-07-22 Cap holding means for fountain pens

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US2520752A true US2520752A (en) 1950-08-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001155B (en) * 1952-04-28 1957-01-17 Theodor Kovacs Fountain pen with screw cap

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US480479A (en) * 1892-08-09 James b
US799810A (en) * 1905-04-05 1905-09-19 Horton Mfg Co Inc Joint or union for fish-rods.
US1669036A (en) * 1926-10-01 1928-05-08 Parker Pen Co Pen-gripping device
US1688622A (en) * 1926-07-08 1928-10-23 Stromberg Carlson Telephone Shield for radio amplifiers or detectors
US1705656A (en) * 1926-07-08 1929-03-19 Pen Desk Set Company Holder for fountain pens
US1829147A (en) * 1930-04-14 1931-10-27 Kirsch Co Coupling or splicing device for curtain poles and ornaments therefor
US1872064A (en) * 1929-07-22 1932-08-16 W A Sheaffer Pen Co Cap construction
CH158560A (en) * 1931-12-30 1932-11-30 Jif Ag Holders for writing implements.
US2278907A (en) * 1940-07-26 1942-04-07 Parker Pen Co Fountain pen
US2396866A (en) * 1944-12-09 1946-03-19 Margaret Carpenter Lytton Cap fastening means for fountain pens

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US480479A (en) * 1892-08-09 James b
US799810A (en) * 1905-04-05 1905-09-19 Horton Mfg Co Inc Joint or union for fish-rods.
US1688622A (en) * 1926-07-08 1928-10-23 Stromberg Carlson Telephone Shield for radio amplifiers or detectors
US1705656A (en) * 1926-07-08 1929-03-19 Pen Desk Set Company Holder for fountain pens
US1669036A (en) * 1926-10-01 1928-05-08 Parker Pen Co Pen-gripping device
US1872064A (en) * 1929-07-22 1932-08-16 W A Sheaffer Pen Co Cap construction
US1829147A (en) * 1930-04-14 1931-10-27 Kirsch Co Coupling or splicing device for curtain poles and ornaments therefor
CH158560A (en) * 1931-12-30 1932-11-30 Jif Ag Holders for writing implements.
US2278907A (en) * 1940-07-26 1942-04-07 Parker Pen Co Fountain pen
US2396866A (en) * 1944-12-09 1946-03-19 Margaret Carpenter Lytton Cap fastening means for fountain pens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1001155B (en) * 1952-04-28 1957-01-17 Theodor Kovacs Fountain pen with screw cap

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