US2522439A - Method of making spring bars - Google Patents
Method of making spring bars Download PDFInfo
- Publication number
- US2522439A US2522439A US687405A US68740546A US2522439A US 2522439 A US2522439 A US 2522439A US 687405 A US687405 A US 687405A US 68740546 A US68740546 A US 68740546A US 2522439 A US2522439 A US 2522439A
- Authority
- US
- United States
- Prior art keywords
- sleeve
- spring
- parts
- spring bars
- pintles
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 210000000707 wrist Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
- G04B37/1486—Arrangements for fixing to a bracelet
- G04B37/1493—Arrangements for fixing to a bracelet by means of a feather spring (Barette á ressort)
-
- 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
- Y10T24/00—Buckles, buttons, clasps, etc.
- Y10T24/47—Strap-end-attaching devices
- Y10T24/4718—Watch pintle connected
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/4984—Retaining clearance for motion between assembled parts
- Y10T29/49845—Retaining clearance for motion between assembled parts by deforming interlock
-
- 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
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
- Y10T29/49861—Sizing mating parts during final positional association
Definitions
- Objects of the invention are to provide a spring bar of'simple, inexpensiveconstruction, consist ing'of few, readily assembledparts, which will hold the strap or wrist band firmly and securely and which, when so required, may be quickly and easily released from the lugs with which it is normally engaged, without the need of special tools.
- a particular object of the invention is to provide a construction in which the parts will be automatically secured together in final relation by and in the act of assembly of such parts.
- Fig. 1 in the drawing is a broken sectional view showing the parts of the spring bar put together and ready for securing in that relation;
- Fig. 2 is a similar view showing the parts secured in the final form.
- the spring bar of the present invention consists of but four parts, a tubular or body portion 5 in the nature of an elongated sleeve, an expansion spring 6 and two end pieces, 1 and 8.
- the end pieces may be duplicate parts, as indicated, each comprising an elongated plunger por tion 9 freely slidable in the sleeve, a reduced projecting neck portion IS, an enlarged head portion ll of approximately the same external diameter as the sleeve and a reduced trunnion portion l2.
- An abrupt annular shoulder I3 is left at the outer end of the sliding plunger portion 9 to serve as a stop for engagement with the inturned flange M at the end of the sleeve to limit the outward extending movement of the pintle forming member.
- the pintle confining flange M, or flanges in the duplicate ended construction illustrated, are provided by forming the ends of the sleeve, as in Fig. l, with a taper or bevel I5 and by constructing the end heads II with conical die cavities 16 in the inner ends which will receive such tapered portions and bend them inwardly into the flange formation indicated in Fig. 2.
- the die cavities [6 at the inner faces of the head members I l are shown as somewhat curved at l9 to curl the thinned edges of the sleeve gradually and smoothly inward into annular flange formation.
- a die block similar to the one indicated at I8 may be placed over the upper pintle and this work may be performed in a press or by a simple hammer operation.
- the spring bar is adapted for use in watch cases and the like having considerable variation in the spacing of the mounting lugs.
- the head portions ll may, and preferably do, have beveled outer edges at 20 where they abut the watch case lugs, facilitating entry of a knife or like instrument for forcing the pintles back to release the spring bar from the watch case or other member.
- the trunnion elements l2 at the extreme ends of the pintles may have beveled or rounded edges at 21 to facilitate entry into and disengagement from the sockets provided to receive the same.
- the plunger portions 9 are shown as having coni-cally pointed inner ends 22 to assist in the assembly of the parts and the centering of the spring between the plunger portions.
- the head portions l I being of substantially the same external diameter as the sleeve, providefor support of the strap at its extreme edges, even in the fully expanded position of the parts represented in Fig. 2.
- the parts may again be restored to their firmly secured relation by merely applying sufficient endwise pressure to cause the dies to again fully close the end flanges of the sleeve.
- the spring bar may be opened up by pulling on the pintles to spring one or both flanges of the sleeve open sufliciently to release one or both pintles. Then after replacement or adjustment of the broken or weakened spring, the parts may be again assembled and secured by applying the endwise pressure necessary to again seat the end flanges of the sleeve over the stop shoulders of the pintles.
- the herein disclosed method of manufacturing a spring bar which comprises providing a sleeve with a beveled end portion reduced in diameter and wall thickness toward the end of the tube, providing a pintle with a plunger portion to slidingly enter the sleeve, a reduced neck portion to extend beyond the end of the sleeve and an enlarged head portion having a conical die cavity opposed to the reduced end portion of the sleeve, entering a spring in the sleeve and then inserting the plunger portion of the pintle in the end of the sleeve over said spring and driving the head portion of said pintle inwardly over the end of the sleeve sufliciently to cause the conical die cavity at the inner face of the same to bend the extreme reduced end portion of the sleeve inwardly about the reduced neck portion and over the plunger portion of the pintle.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Adornments (AREA)
Description
Sept. 12, 1950 R. FEURER 7 METHOD OF-MAKING SPRING BARS Flled July 31, 1946 Robert FUr'r INVENTOR- L) 57 7.. ATTORNEY Patented Sept. 12, 1950 UNITED A EN oF lcs METHOD OF MAKING SPRING BARS' Robert Feurer, Jackson Heights; N. assignor:
to-F'eurer Bros Inc., New York, N. Y., a corporation of New York Application July 31, 1946 Serial NOL GS ZAOE roiaim. (01. 2941 48) l Thelinvention disclose'drelates to spring bars for wrist watches,.bracele.ts Or the like.
Objects of the invention are to provide a spring bar of'simple, inexpensiveconstruction, consist ing'of few, readily assembledparts, which will hold the strap or wrist band firmly and securely and which, when so required, may be quickly and easily released from the lugs with which it is normally engaged, without the need of special tools.
A particular object of the invention is to provide a construction in which the parts will be automatically secured together in final relation by and in the act of assembly ofsuch parts.
Other desirable objects and the novel features through which the purposes of the invention are attained are set forth or will appear in the course of the following specification.
The drawing accompanying and forming part of the specification illustrates a present preferred embodiment of the invention. Structure, however, may be modified and changed, all within the true and proper scope of the invention, as will be apparent from the following specification and claim.
Fig. 1 in the drawing is a broken sectional view showing the parts of the spring bar put together and ready for securing in that relation;
Fig. 2 is a similar view showing the parts secured in the final form.
The spring bar of the present invention consists of but four parts, a tubular or body portion 5 in the nature of an elongated sleeve, an expansion spring 6 and two end pieces, 1 and 8.
The end pieces may be duplicate parts, as indicated, each comprising an elongated plunger por tion 9 freely slidable in the sleeve, a reduced projecting neck portion IS, an enlarged head portion ll of approximately the same external diameter as the sleeve and a reduced trunnion portion l2.
An abrupt annular shoulder I3 is left at the outer end of the sliding plunger portion 9 to serve as a stop for engagement with the inturned flange M at the end of the sleeve to limit the outward extending movement of the pintle forming member.
The pintle confining flange M, or flanges in the duplicate ended construction illustrated, are provided by forming the ends of the sleeve, as in Fig. l, with a taper or bevel I5 and by constructing the end heads II with conical die cavities 16 in the inner ends which will receive such tapered portions and bend them inwardly into the flange formation indicated in Fig. 2.
I While various methods of assembly may be used, the one indicated in Fig. 1 may be employed,
involving seatingoneof. the-end: pintles; inaxcore respondingly shaped cavity; H in a, die:v block .1 8) and then sliding the. sleeve over the; projecting plunger portion 91 of the thus. supportedpintle, dropping. the spring in on top of. such plunger. portion, sliding the plunger portion of the other pintle in over the upper end of the spring and then applying end pressure on the pintles to cause the convergent dies It to force the thinned ends of the sleeve inward about the reduced neck portions III.
The die cavities [6 at the inner faces of the head members I l are shown as somewhat curved at l9 to curl the thinned edges of the sleeve gradually and smoothly inward into annular flange formation.
In applying the flange closing pressure a die block similar to the one indicated at I8 may be placed over the upper pintle and this work may be performed in a press or by a simple hammer operation.
The few parts shown can be quickly and easily put together and the finalact of assembly automatically secures them in that relation but with the pintles free for limited telescopic movement in the sleeve.
With both ends telescopically adjustable, the spring bar is adapted for use in watch cases and the like having considerable variation in the spacing of the mounting lugs.
The head portions ll may, and preferably do, have beveled outer edges at 20 where they abut the watch case lugs, facilitating entry of a knife or like instrument for forcing the pintles back to release the spring bar from the watch case or other member.
Similarly, the trunnion elements l2 at the extreme ends of the pintles may have beveled or rounded edges at 21 to facilitate entry into and disengagement from the sockets provided to receive the same.
The plunger portions 9 are shown as having coni-cally pointed inner ends 22 to assist in the assembly of the parts and the centering of the spring between the plunger portions.
The head portions l I being of substantially the same external diameter as the sleeve, providefor support of the strap at its extreme edges, even in the fully expanded position of the parts represented in Fig. 2.
The thinned, convergent ends of the sleeve, by entering the convergent die cavities more or less, permit maximum compression adjustments of the device.
If in service the confining flanges show indications of weakening or giving way, the parts may again be restored to their firmly secured relation by merely applying sufficient endwise pressure to cause the dies to again fully close the end flanges of the sleeve.
If the spring should break or weaken, the spring bar may be opened up by pulling on the pintles to spring one or both flanges of the sleeve open sufliciently to release one or both pintles. Then after replacement or adjustment of the broken or weakened spring, the parts may be again assembled and secured by applying the endwise pressure necessary to again seat the end flanges of the sleeve over the stop shoulders of the pintles.
What is claimed is:
The herein disclosed method of manufacturing a spring bar which comprises providing a sleeve with a beveled end portion reduced in diameter and wall thickness toward the end of the tube, providing a pintle with a plunger portion to slidingly enter the sleeve, a reduced neck portion to extend beyond the end of the sleeve and an enlarged head portion having a conical die cavity opposed to the reduced end portion of the sleeve, entering a spring in the sleeve and then inserting the plunger portion of the pintle in the end of the sleeve over said spring and driving the head portion of said pintle inwardly over the end of the sleeve sufliciently to cause the conical die cavity at the inner face of the same to bend the extreme reduced end portion of the sleeve inwardly about the reduced neck portion and over the plunger portion of the pintle.
ROBERT FEURER.
REFERENCES CITED The following references are of record in the file of this patent:
UNITED STATES PATENTS Number Name Date 124,556 Dyer Mar. 12, 1872 638,564 Davies Dec. 5, 1899 928,947 Dawson July 27, 1909 1,437,144 Isaacson 1' Nov. 28, 1922 2,157,408 Greenberg May 9, 1939 FOREIGN PATENTS Number Country Date Switzerland Mar. 1, 1929
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US687405A US2522439A (en) | 1946-07-31 | 1946-07-31 | Method of making spring bars |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US687405A US2522439A (en) | 1946-07-31 | 1946-07-31 | Method of making spring bars |
Publications (1)
Publication Number | Publication Date |
---|---|
US2522439A true US2522439A (en) | 1950-09-12 |
Family
ID=24760328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US687405A Expired - Lifetime US2522439A (en) | 1946-07-31 | 1946-07-31 | Method of making spring bars |
Country Status (1)
Country | Link |
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US (1) | US2522439A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659128A (en) * | 1950-01-21 | 1953-11-17 | Weatherhead Co | Method of making dehydrators |
US2882575A (en) * | 1956-08-09 | 1959-04-21 | Amity Leather Prod Co | Wing envelope holder assembly for pass case |
US3154615A (en) * | 1958-12-01 | 1964-10-27 | Drackett Co | Method of making and assembling a liquid dispenser |
US4097955A (en) * | 1975-12-02 | 1978-07-04 | Hans Thomas Thomsen | Device or wheel unit for mounting in a suitcase |
US4214465A (en) * | 1977-11-25 | 1980-07-29 | Temper Corporation | Tolerance compensating deforming press |
US20200290254A1 (en) * | 2019-03-15 | 2020-09-17 | Ting-Jui Wang | Assembly method and structure of control device |
US20240003373A1 (en) * | 2019-02-27 | 2024-01-04 | Ting-Jui Wang | Lateral locating device |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US124556A (en) * | 1872-03-12 | Improvement in links | ||
US638564A (en) * | 1899-07-01 | 1899-12-05 | Hayward Tyler & Co | Joint permitting of independent rotation of the two parts. |
US928947A (en) * | 1908-07-06 | 1909-07-27 | Sieber & Trussell Mfg Company | Means for uniting metal parts. |
US1437144A (en) * | 1920-07-15 | 1922-11-28 | Isaacson John | Method of making swivels |
CH130728A (en) * | 1928-01-28 | 1928-12-31 | Allemand H E | Horned wristwatch case bar. |
US2157408A (en) * | 1937-12-04 | 1939-05-09 | Charles B Greenberg | Spring bar |
-
1946
- 1946-07-31 US US687405A patent/US2522439A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US124556A (en) * | 1872-03-12 | Improvement in links | ||
US638564A (en) * | 1899-07-01 | 1899-12-05 | Hayward Tyler & Co | Joint permitting of independent rotation of the two parts. |
US928947A (en) * | 1908-07-06 | 1909-07-27 | Sieber & Trussell Mfg Company | Means for uniting metal parts. |
US1437144A (en) * | 1920-07-15 | 1922-11-28 | Isaacson John | Method of making swivels |
CH130728A (en) * | 1928-01-28 | 1928-12-31 | Allemand H E | Horned wristwatch case bar. |
US2157408A (en) * | 1937-12-04 | 1939-05-09 | Charles B Greenberg | Spring bar |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2659128A (en) * | 1950-01-21 | 1953-11-17 | Weatherhead Co | Method of making dehydrators |
US2882575A (en) * | 1956-08-09 | 1959-04-21 | Amity Leather Prod Co | Wing envelope holder assembly for pass case |
US3154615A (en) * | 1958-12-01 | 1964-10-27 | Drackett Co | Method of making and assembling a liquid dispenser |
US4097955A (en) * | 1975-12-02 | 1978-07-04 | Hans Thomas Thomsen | Device or wheel unit for mounting in a suitcase |
US4214465A (en) * | 1977-11-25 | 1980-07-29 | Temper Corporation | Tolerance compensating deforming press |
US20240003373A1 (en) * | 2019-02-27 | 2024-01-04 | Ting-Jui Wang | Lateral locating device |
US20200290254A1 (en) * | 2019-03-15 | 2020-09-17 | Ting-Jui Wang | Assembly method and structure of control device |
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