US1915890A - Mechanical time fuse for artillery projectiles - Google Patents

Mechanical time fuse for artillery projectiles Download PDF

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Publication number
US1915890A
US1915890A US554101A US55410131A US1915890A US 1915890 A US1915890 A US 1915890A US 554101 A US554101 A US 554101A US 55410131 A US55410131 A US 55410131A US 1915890 A US1915890 A US 1915890A
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US
United States
Prior art keywords
fuse
central shaft
mechanical time
segments
time fuse
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
US554101A
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English (en)
Inventor
Junghans Helmut
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.)
ANONIMA ARTURO JUNGHANS FABRIC
ANONIMA ARTURO JUNGHANS FABRICA D'OROLOGERIA Soc
Original Assignee
ANONIMA ARTURO JUNGHANS FABRIC
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 ANONIMA ARTURO JUNGHANS FABRIC filed Critical ANONIMA ARTURO JUNGHANS FABRIC
Application granted granted Critical
Publication of US1915890A publication Critical patent/US1915890A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C9/00—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition
    • F42C9/02—Time fuzes; Combined time and percussion or pressure-actuated fuzes; Fuzes for timed self-destruction of ammunition the timing being caused by mechanical means

Definitions

  • the present invention relates to mechanical time fuses for artillery projectiles and more particularly to a time fuse of the stated kind wherein the necessary moments of force are obtained exclusively by means of centrifugal weights.
  • the driving toothed segments or racks are adapted to mesh directly with a pinion keyed to or integral with the central shaft of the fuse,said shaft carrying the usual'setting disk and being arranged to perform a single revolution only during the most prolonged trajectory or flight of the projectile, whereas according to the present invention, a means for transmission from a lower to a higher speed is interposed between the said segments and the central shaft, said means comprising a system or set of toothed wheels.
  • Figure 1 is a rear view partly in section of the fuse
  • Figs. 2 to 5 are graphic representations indicating the calculations of the centrifugal forces.
  • the two centrifugal weights a are firmly attached to toothed segments a pivotally mounted on supporting studs 6 so as to be adapted to turn thereabout.
  • the two segments a engage in pinions c firmly connected or integrally formed with toothed wheels d constituting the means for transmission from a lower to a higher speed, between the segments a and the central shaft e, the arrangement being such that both wheels el engage at diametrical points in a pinion keyed to or integral with the shaft e and adapted to actuate in a known manner both the setting disk and regulating means of the fuse;
  • Figures 2 to 5 of the drawings illustrate graphically two calculations of the driving centrifugal forces, Figure 2 showing the calculation of the driving centrifugal forces of: the prior construction, wherein the segment immediately engages in the pinion of the central shaft.
  • the weight ap-- pended to the segment will travel a path of 10 mm length at or for a full revolution ofthe central shaft.
  • V Apart from the centrifugal forces acting upon the weight of the segment, the tangential forces are plotted and converted to the pitch circle of the pinion of the central shaft
  • Figure 4 is a diagram showing the said tangential forces in the form of a curve. It will be seen therefrom, that the force at the beginning of the movement bears a proportion of 1 to 3, 4 to the force exerted at the end of the movement.
  • Figure 3 illustrates the same graphical calculation or lotting respecting the construction of the filse according to the present injectile decreases durin vention, wherein the segments do not immediatel mesh with the pinion of the central shaft ut rather engage in a separate pinion formed integral with a toothed wheel meshing with the pinion of the shaft.
  • the movement or travel of the weights will amount to 3, 5 min. only, while the movement of the central shaft, that is one revolution in case of a most prolonged flight or trajectory, will be the same.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Toys (AREA)
  • Gear Transmission (AREA)
  • Retarders (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
US554101A 1930-08-16 1931-07-30 Mechanical time fuse for artillery projectiles Expired - Lifetime US1915890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE544350T 1930-08-16

Publications (1)

Publication Number Publication Date
US1915890A true US1915890A (en) 1933-06-27

Family

ID=34258099

Family Applications (1)

Application Number Title Priority Date Filing Date
US554101A Expired - Lifetime US1915890A (en) 1930-08-16 1931-07-30 Mechanical time fuse for artillery projectiles

Country Status (5)

Country Link
US (1) US1915890A (de)
CH (1) CH156486A (de)
DE (1) DE544350C (de)
GB (1) GB361825A (de)
NL (1) NL30117C (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972290A (en) * 1975-07-28 1976-08-03 The United States Of America As Represented By The Secretary Of The Navy Flywheel type odometer safing and arming mechanism
US4418621A (en) * 1980-04-01 1983-12-06 Mefina S.A. Mechanism for a rotating projectile fuze

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3972290A (en) * 1975-07-28 1976-08-03 The United States Of America As Represented By The Secretary Of The Navy Flywheel type odometer safing and arming mechanism
US4418621A (en) * 1980-04-01 1983-12-06 Mefina S.A. Mechanism for a rotating projectile fuze

Also Published As

Publication number Publication date
NL30117C (de)
GB361825A (en) 1931-11-26
DE544350C (de) 1932-02-17
CH156486A (de) 1932-08-15

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